Revert "[maven-release-plugin] prepare for next development iteration"

This reverts commit 9980c0794cfefd9164e6fea49d2b8021331ceb2a.
diff --git a/api/pom.xml b/api/pom.xml
index cda4f91..0ef1e5b 100644
--- a/api/pom.xml
+++ b/api/pom.xml
@@ -30,7 +30,7 @@
 
     <groupId>org.apache.clerezza.commons-rdf</groupId>
     <artifactId>commons-rdf-api</artifactId>
-    <version>0.2-SNAPSHOT</version>
+    <version>0.1</version>
     <packaging>bundle</packaging>
     <name>Clerezza Commons RDF API</name>
     <description>
@@ -50,7 +50,7 @@
         <connection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</connection>
         <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</developerConnection>
         <url>https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</url>
-      <tag>HEAD</tag>
+      <tag>0.1</tag>
   </scm>
 
 
diff --git a/impl.sparql/pom.xml b/impl.sparql/pom.xml
index f973fa5..59e0ca7 100644
--- a/impl.sparql/pom.xml
+++ b/impl.sparql/pom.xml
@@ -12,7 +12,7 @@
 
     <groupId>org.apache.clerezza.commons-rdf</groupId>
     <artifactId>commons-rdf-impl-sparql</artifactId>
-    <version>0.2-SNAPSHOT</version>
+    <version>0.1</version>
     <packaging>bundle</packaging>
     <name>Clerezza Commons RDF SPARQL backed implementation.</name>
     <description>An implementation of the rdf commons API backed by a sparql 
@@ -31,7 +31,7 @@
         <connection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</connection>
         <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</developerConnection>
         <url>https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</url>
-      <tag>HEAD</tag>
+      <tag>0.1</tag>
   </scm>
     
     <properties>
@@ -49,12 +49,12 @@
         <dependency>
             <groupId>org.apache.clerezza.commons-rdf</groupId>
             <artifactId>commons-rdf-api</artifactId>
-            <version>0.2-SNAPSHOT</version>
+            <version>0.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.clerezza.commons-rdf</groupId>
             <artifactId>commons-rdf-impl-utils</artifactId>
-            <version>0.2-SNAPSHOT</version>
+            <version>0.1</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/impl.utils/pom.xml b/impl.utils/pom.xml
index cbe5c8f..0b30c51 100644
--- a/impl.utils/pom.xml
+++ b/impl.utils/pom.xml
@@ -30,7 +30,7 @@
 
     <groupId>org.apache.clerezza.commons-rdf</groupId>
     <artifactId>commons-rdf-impl-utils</artifactId>
-    <version>0.2-SNAPSHOT</version>
+    <version>0.1</version>
     <packaging>bundle</packaging>
     <name>Clerezza Commons RDF Implementation Utils</name>
     <description>
@@ -50,7 +50,7 @@
         <connection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</connection>
         <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</developerConnection>
         <url>https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</url>
-      <tag>HEAD</tag>
+      <tag>0.1</tag>
   </scm>
     
     <build>
@@ -73,7 +73,7 @@
         <dependency>
             <groupId>org.apache.clerezza.commons-rdf</groupId>
             <artifactId>commons-rdf-api</artifactId>
-            <version>0.2-SNAPSHOT</version>
+            <version>0.1</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>
diff --git a/pom.xml b/pom.xml
index 28efb24..6c56989 100644
--- a/pom.xml
+++ b/pom.xml
@@ -39,7 +39,7 @@
     <groupId>org.apache.clerezza.commons-rdf</groupId>
     <artifactId>commons-reactor</artifactId>
     <packaging>pom</packaging>
-    <version>0.2-SNAPSHOT</version>
+    <version>0.1</version>
     <name>Clerezza Commons RDF</name>
     <description>
         Apache Commons RDF provides an API modelling the RDF data model as defined by 
@@ -58,7 +58,7 @@
         <connection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</connection>
         <developerConnection>scm:git:https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</developerConnection>
         <url>https://git-wip-us.apache.org/repos/asf/clerezza-rdf-core.git</url>
-      <tag>HEAD</tag>
+      <tag>0.1</tag>
   </scm>
 
     <modules>